Full Disclosure: The product sample used in this article has been provided by SanDisk.

Over the past several years I’ve amassed a collection of SD (Secure Digital) cards beyond count, likely the result of various devices that depended on this media for recording files to flash storage. As the technology improved, more and more devices began using the microSD format. Eventually the microSD card surpassed the competition to become the standard with its faster speeds, higher capacity, and compact lightweight profile. In this article Benchmark Reviews will test transfer speeds and performance of the extended capacity 64GB SanDisk Extreme UHS-I microSDXC card, model SDSDQX-064G-U46A.

The speed of the memory card determines how rapidly photos can be taken and stored, or how smoothly video is recorded. UHS Speed Grade 1 (U1) and Class 10 microSD memory cards are among fastest currently available, enabling devices to immediate store files without stutter or delay. 100 MHz UHS-I Speed Grade microSDHC or microSDXC memory cards increase write speeds to 50 MB/s or faster. Additionally, many devices are limited to 32GB microSD memory card capacity, which is where the SanDisk Extreme microSDXC (extended capacity) card comes in handy with twice the storage space.

UHS-I microSDXC Card Features

Courtesy SanDisk

Up to 80MB/s Read Speed for Exceptional Performance

Featuring read speeds up to 80MB/s, the SanDisk Extreme microSDHC and microSDXC UHS-I Memory Cards save time moving it all from the camera to the computer. Enjoy quick photo editing and smooth Full HD video playback. You’ll also be able to transfer and retrieve files more efficiently.

Storage Capacities Up to 64GB

SD Adapter for Versatility

This card comes with a convenient SD™ card adapter, so you can also capture and access data on the card with any device that has an SD card slot. You’ll be able to use your memory card with SD enabled cameras, camcorders, tablets, and laptops.

Durable Design

Designed to protect your memories from life’s mishaps, SanDisk Extreme microSDHC and microSDXC UHS-I Memory Cards are waterproof, shockproof, and X-ray proof. They can operate in temperatures ranging from -13 to 185 degrees Fahrenheit. Take your phone, tablet, or camera to the mountains, the ocean, or the desert. Even if your device doesn’t survive, your SanDisk memory card will.